/Engine/Source/Editor/ViewportInteraction/Public/ViewportInteractor.h
To be overridden. Called by HandleInputAxis before delegates and default input implementation
void HandleInputAxis_BP ( const [FViewportActionKeyInput](API\Editor\ViewportInteraction\FViewportActionKeyInput) & Action, const [FKey](API\Runtime\InputCore\FKey) Key, const float Delta, const float DeltaTime, bool & bOutWasHandled )